How is the drum level calculated? ?
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For the level gauge 58LT1009C in Heat and Power Workshop No. 3, the center distance between the two chambers of its balance container is 670 MM. The working medium is saturated water; the absolute working pressure is 11.5 MPa. The density of water under operating conditions is 663.482 kg/m3, while the density of steam under operating conditions is 66.237 kg/m3. The density of water in its initial state is 849.762 kg/m3, and the density of steam in its initial state is 10.047 kg/m3. Try to calculate the range of the level gauge transmitter
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I’m not sure if I understand correctly. You need a measurement range – can I assume that you’re using a differential pressure transmitter? Need a differential pressure range? That simple algorithm requires that your pressure difference be sufficient to cover the ρgh pressure difference; the density should be taken as the density in its original state, and the height depends on the distance from which pressure is measured in the equilibrium container. As a precaution, and if you want greater accuracy, change the density to that of the water under operating conditions, and then choose a value that is slightly higher than necessary. After all, what you select is just the range – as long as it doesn’t exceed that range, it’s fine. The actual liquid level is determined based on the differential pressure